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Host Name may not be null ERROR
Posted: Wed Oct 20, 2010 4:09 am
by sliceofpie
Hi,
Im getting an error when running JDiskExplorer. "Host name may not be null".
What does this mean and how do I correct this?
Re: Host Name may not be null ERROR
Posted: Wed Oct 20, 2010 10:25 pm
by sliceofpie
I resolved this by adding a mime type in IIS for .properties as text/plain.
Now I have a new error:
when my browser page loads with JDiskExplorer I get a Java error "Caused by: java.io.IOException: open http connection failed:
http://server/jfileupload/upload/client ... lass.class"
I need getting this error resolved as this does not allow JDiskExplorer to load.
Any help is greatly appreciated!
Re: Host Name may not be null ERROR
Posted: Thu Oct 21, 2010 4:08 pm
by sliceofpie
Here is a more detailed error message. PLEASE HELP!!!
Code: Select all
Java Plug-in 1.6.0_19
Using JRE version 1.6.0_19-b04 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\User1
----------------------------------------------------
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------
load: class jfileupload.upload.client.MApplet.class not found.
java.lang.ClassNotFoundException: jfileupload.upload.client.MApplet.class
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed:http://server/jfileupload/upload/client/MApplet/class.class
at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
... 7 more
Exception: java.lang.ClassNotFoundException: jfileupload.upload.client.MApplet.class
Re: Host Name may not be null ERROR
Posted: Thu Oct 21, 2010 4:43 pm
by support
Are you able to access JAR file directly from browser? Such as:
http://www.yourserver.com/something/jfileupload.jar
Do you have JFileUpload JAR files + JDiskExplorer JAR files installed?
Re: Host Name may not be null ERROR
Posted: Thu Oct 21, 2010 4:57 pm
by sliceofpie
I tried accessing
http://server/lib/jfileupload.jar and get a HTTP 500 error. I know the file is there but cannot access it from the browser.
Re: Host Name may not be null ERROR
Posted: Fri Oct 22, 2010 6:30 am
by support
Your server might not serve .jar file. Are using IIS? Check your web server configuration.
Also, are the JAR files in a protected area/folder on your web server?
Re: Host Name may not be null ERROR
Posted: Mon Oct 25, 2010 4:44 pm
by sliceofpie
Thanks for your reply. Jar files are listed under the mime types on the IIS server. All I did is move the files from one server, over to another. Can you give me any information on how to correct this?
Re: Host Name may not be null ERROR
Posted: Mon Oct 25, 2010 6:50 pm
by support
Java archive (.jar) should be mapped to application/x-java-archive or application/java-archive or application/octet-stream
Re: Host Name may not be null ERROR
Posted: Mon Oct 25, 2010 7:12 pm
by sliceofpie
Java archive (.jar) should be mapped to application/x-java-archive or application/java-archive or application/octet-stream
The jar files were correctly listed.
I end up re-installing from scratch and it's working again
Re: Host Name may not be null ERROR
Posted: Mon Oct 25, 2010 7:18 pm
by support
Ok, fine.